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3 years ago

Rationalize the denominator (-7x^2)/√(6x-6)

1 answer:

5 0

$\bf \cfrac{-7x^2}{\sqrt{6x-6}}\cdot \cfrac{\sqrt{6x-6}}{\sqrt{6x-6}}\implies \cfrac{-7x^2\sqrt{6x-6}}{\sqrt{(6x-6)^2}}\implies \cfrac{-7x^2\sqrt{6x-6}}{6x-6}$

the idea being, getting rid of the pesky radical at the bottom, simply multiply it by something that'd raise it to the root, so it gets out :)

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The function shown crosses the y-axis at.... (Pls help me ill give brainliest)

allsm [11]

Answer:

(0,3)

Step-by-step explanation:

(x,y)

you need to be on the y-axis and to be on that you need to have 0 on the

x-axis which is the first number you see (if you are reading from left to right)

and you need to go up 3 times so you put a 3 on the y axis and boom there you have it

Hope this helps!

5 0

2 years ago

Which of the following sets of values correctly completes the t-chart for the equation y = 2x2 - 1. image below

Inessa [10]

Answer:

y=3

Step-by-step explanation:

you times 2 and 2 together and it give you 4

8 0

3 years ago

Find the accumulated value of an investment of $20,000 for 7 years at an interest rate of 5.5% if the money is:

Amiraneli [1.4K]

Answer:

See below

Step-by-step explanation:

Given:

Investment P = $20000
Time t = 7 years
Interest rate r = 5.5% = 0.055

a. compounded semiannually, n = 2

$A = P*(1 + r/n)^{nt} = 20000(1+0.055/2)^{2*7} = 29239.88$

b. compounded quarterly, n = 4

$A = P*(1 + r/n)^{nt} = 20000(1+0.055/4)^{4*7} = 29315.30$

c. compounded monthly, n = 12

$A = P*(1 + r/n)^{nt} = 20000(1+0.055/12)^{12*7} = 29366.44$

d. compounded continuously

$A = Pe^{rt}=20000*e^{0.055*7}=29392.29$

5 0

2 years ago

Read 2 more answers

How long would it take to travel 425 m at the rate of 50

Murljashka [212]

425 / 50 = 8,5

There you go.

4 0

3 years ago

Read 2 more answers

Part A: Which three-dimensional geometric shape best models this pancake? (1 point)

barxatty [35]

Answer:

Step-by-step explanation:

Part A: The pancake is a cylinder shape with a circular top and bottom and straight middle.

Part B: Rotating a circle will NOT make a cylinder. Instead rotating a rectangular around a vertical axis will. It is a rectangle of 1cm height and 7cm length rotating around an axis at its edge.**

**Thanks to Moderator wegnerkolmp2741o who pointed out that it has to be a rectangle of 1cm height and 7cm length rotating around an axis at its edge. My original option of 1cm height and 14cm length rotating around its center would cause an overlapping shape.

8 0

2 years ago